Turnover mechanism



Oct. 20, 1953 P. H. JENKINS TURNOVER MECHANISM Filed Jan. l0, 1951 2 SheetSSheet l Figui oct. zo, 1953 P. H. JENKINS 2,656,051

TURNOVER MECHANISM Filed Jan. 10, 1951 2 Sheets-Sheet 2 1N V EN TOR.

Patented Oct. 20, 1953 UNITED STA'ZS ANT OFFICE TURNOVER MECHANISM Phil H. Jenkins, Columbus, Ohio Application January 10, 1951, Serial No. 205,289

3 Claims. l

This invention relates to labor saving devices, and more particularly to mechanism for turning over end for end a large pile of stacked sheets of material, such as paper, or the like, for example. In general, the invention includes side and end frames connected to provide a support for the stack and a pivot mechanism whereby the stack when lifted can be turned over end for end.

Devices for this purpose, such as shown in the patents to Schwab, No. 1,486,609 and No. 1,570,088, have certain limitations in use. These devices, as shown, are devoid of either side or end supporting members. When handling a stack of sheets of paper, for example, 36 inches by 48 inches, about 9000 in number, and 42 inches in height, the weight is about 2000 pounds. Consequently, when such a stack is to be turned over the clamping members, such as shown by Schwab, must be drawn together so tightly that the unsupported weight of the stack, when turned on one side, cannot cause the stack to sag or the sheets to slip out of the stacked position. Clamping and unclamping the mechanism under such operating conditions requires both skill and considerable time if done safely and eiiiiciently.

This invention has for one of its objects and advantages the provision of a turn-over device which provides both safety and speed of operation. It is also an object of this invention to provide a device of the type described having end frames adapted to be placed at the ends of the stack to provide support therefor and which are held in position by bar means placed across the skids both on the top and bottom of the stack.

It is another object of the invention to provide a single side frame, which connects with the end frames to provide support for the side of the stack. An advantage oi this construction is that the side of the stack, which is turned to the bottom or under-side as the stack is turned end for end, is thus always supported and the weight of the stack cannot cause sagging or displacement of the sheets while turning.

The side and end frames are provided further with a slotted end construct-ion. One advantage of this construction is that the assembly time, as well as the removal time, is reduced considerably in operation. This will be more fully apparent from the description of the operation which follows.

Another object of the invention lis to provide each of the end frames with pivot means, including a ratchet mechanism, so that any commonly available hoisting means, such as a chain hoist for example, can be used to lift the stack together with the skids between which the stack is positioned. A feature of this construction is that the stack can be turned only in one direction; i. e., so that the side frame will be on the bottom as the stack is turned over. Thus no accidental dropping of the stack can occur because of inadvertently turning the raised stack in the wrong direction at a time when the end frames might not be fastened properly.

Other objects and advantages of the invention will be apparent from the following description, together with the accompanying drawings, and the appended claims.

In the drawings, wherein a preferred embodiment oi the invention is shown, Fig. 1 is a perspective view showing a stack of sheets of paper positicned between a bottom and a top skid. These skids are of the type commonly used in printing establishments for either positioning the sheets for feeding into large presses or to receive the sheets printed on one side as they are discharged from the presses. One ofthe end frames and the side frame are shown in the mounted position to support the stack.

Fig. 2 is a view similar to Fig. 1 showing the stack after it has been lifted and in a partially turned over position.

Fig. 3 is a front elevational view showing the shaft and collar with the ratchet mechanism which provides for turning the raised stack in only one direction.

Fig. 4 is a side elevational View of the mechanism shown in Fig. 3.

Fig. 5 is a broken, vertical sectional View, partly in elevation, showing the simplified construction provided for the frame connecting members, as seen on line 5-5 Fig. 1.

Referring further to the drawings, in Fig. 1 a stack I0 of sheets of paper are piled in position upon a wooden skid II. A similar skid I2 is placed on top of the stack. These skids I I and I2 are of the type commonly used in various industries for receiving articles which are to be stored or moved from one area to another by means of small trucks or dollies.

An end frame, indicated generally at I 5, is provided which cooperates with ano-ther similarly formed end frame, not shown in the drawings, to provide support for each end of the stack. Each of the pair of end frames I5 is formed from channelmembers joined by welding to provide a substantially H shaped frame as shown in Fig. 1. This frame I5 comprises vertical members I6 which are connected by the horizontal cross members I'I and I8. The vertical members I6 are closed at each end with a metal block 2l. This block has threaded passages formed therein which extend at right angels to each other, as seen most clearly in Fig. 5. Through these passages in the blocks 2l extend bolts, indicated at 24 and 25.

Bar means, indicated generally at 30, are placed in position across each of the skid members Il and I2 as illustrated in Figs. 1 and 2. These bar means are formed from light channel members which have their ends slotted to receive the heads of the bolts 24. The bolts 24 thus form means for adjustably connecting the endirames to the bar means. Since the threaded portion of the bolts 24 extends through the .block 2l, the bolts 24 can be adjusted to provide for holding the end frames in supporting position' at each end of the stack, and the skid members I I and I2 are clamped together so that the stack can be turned end for end.

The side frame, indicated generally `at 35, provides for supporting the side of stack and which becomes the under side or bottom thereof as the stack is being turned over end for end. The side frame is formed from a plurality of vertically extending channel members 35 connected by the horizontal extending members 31. The end oi each member 3'I is slotted as shown at 38, to receive the vhead of bolt 25 as shown in the drawings. The bolts 25 can be adjusted relative 'to the blocks 2| to provide for connecting the side frame to the end frames. It will be apparent in operation that after the vend frames are in position it isla relatively easy matter to place the side frame in position because the slotted end portions 33 are adapted to drop over the heads of the bolts 25. The slotted end construction provided for both the bar means 33 and the members 3-1 thus facilitates both assembly and removable of the mechanism in operation, since the bolts 24 and 25 do not have to be removed completely at any time.

Pivot means, indicated generally at 4I in Figs. 1 and 2, on each ofthe end frames provide for turning the stacked sheets and skid members over end for end. The pivot means, as shown, is mounted between the members I'I 'and I8 of the end frames. For this purpose, each of the end frames is providedwith a front plate A42 and a rear plate 43 welded to the members `I`I and I8 to form supporting members. `These plates support the shaft d4 which is stationary. A collar 45 having a bail 46 is mounted on the shaft 44. Theshaft and collar are free-to provide relative rotation `so that the stack canfbe turned over end-for end when lifted. As seen-most clearly in Fig. 3, the collar is retained'upon the shaft with a Cotter pin A1. The hook'5l of the chainhoist 52 engagesthe bail 6 and provides for'lifting the stack and skids above the oor to a height sufficient to allow the stack to be turned over end for end.

The pivot means includes va ratchet mechanism which allows-the stack to be turned over in one direction; only, i. e., so that the side frame becomes a'bottom supporting member for the stackas it rotates, as indicated in Fig. 2. The ratchet mechanism comprises a ratchet wheel 55,`Figs. 3 and4,'keyed tothe shaftdll. lA spring pressed pawl l56, carried by the collar45 -engages the wheel and provides for itsrotation in one direction onlyfwh'en engaged. `-Thepawl can be raised manually Aagainst the `action "of the 4 spring if it is desired to provide rotation in the opposite direction.

In operation, after the stack has been formed on the bottom skid and the top skid placed in position, the bars 30 are placed across the skids. The end frames are then placed in position and the bolts 24 tightened to hold the frames as shown in Fig. 1. The side frame is hung in position and the bolts 25 tightened. It is then only necessary to `raise the stack vand skids above the floor with the chain hoist and manually push against the stack to cause it to turn over end for end.

The stack is then lowered to the floor again and the side and end frames removed by loosening the bolts YEiland 25, which also allows the bars 30 vto be removed.

From the .abovedescription it will be apparent that the device shown is constructed and operates 'to accomplish .the objects and advantages set forth. However, While the embodiment of the invention disclosed fherein `constitutes a preferred form, it is '-to`be understood that other forms might be adopted-all -coming within the scope of the claims which follow.

`I claim:

1. A mechanism for turning over end for end a pile of stacked sheets positioned between a pair of skid members-comprising a pair of VIst-shaped end frames adapted to be placed one at each end of the stack to support the stack; bar means adapted to be positioned across each 'ofthe skid members and having slottedv ends formed therein; bolts carried by lsaid end `frames adapted tobe received in said slotted ends rfor connecting the end frames and'bar'means; la single side frame adapted to be placedatfone'side of the stack to support the stack having slotted ends vformed therein; bolts carried by the .end frame and adapted to be received within saidvslotted ends of the side frame to provide for connecting the side frame to ithe end frames; pivot means connected to eaohend frame to provide for turning -the stacked sheets and skid members over end for end; and means for applying a lifting force to thepivot means whereby vthe stacked sheets and skid members can beliftedv and turned over end for end.

2. A mechanism for turning over end orend a pile of stacked sheets positioned `between a pair of skid memberscomprising a pair of end .frames adapted to be .placed one at each endoi the stackito support the stack, 'each'.endt frame, having means in the form .of bolts projectingtherefrom; bar means adaptedxto be positioned acrosseach of the skid members and having: slotted openings formed therein for engagement with said bolts; each end .frame having asecond bolt .means projecting therefrom; a single side frame adapted to be placedat one side of the stack to support the stack and having slotted openings formed `therein for engagement with'said second .'boltmeans; pivot vmeans connected to each. end frameto provide for turning the Astacked sheets andskid members over end for end; and means for applying a lifting force `to the pivot means whereby the' stacked sheets `and skid members can be lifted and turned over end for end.

3. A mechanism for turning over end for end a pile of stacked sheets positioned between a'par of skid members comprising a pair of rfi-shaped end frames adaptedfto be placed one at each end of the stack to support the stack; bar means adapted to be positioned across each of the VSkid members and having slotted ends formed'therein; bolts carried byfsaidend 'frames Iadapted tobe received in said slotted ends for connecting the end frames and bar means; a side frame adapted to be placed at one side of the stack to support the stack having slotted ends formed therein; bolts carried by the end frames and adapted to be received Within said slotted ends of the side frame to provide for connecting the side frame to the end frames; pivot means, including a ratchet mechanism, connected to each end frame to provide for turning the stacked sheets and skid members over end for end in one direction only; and means for applying a lifting force to the pivot means whereby the stacked sheets and skid members can be lifted and turned over end for end.

PHIL. H. JENKINS.

Number Name Date 1,274,307 Moller July 30, 1918 1,429,327 Daniell Sept. 19, 1922 1,486,609 Schwab Mar. 11, 1924 1,570,088 Schwab Jan. 19, 1926 2,443,202 Smith June 15, 1948 

